Onsite crankshaft Repair, Crankshaft Grinding, and Crankshaft Reconditioning have been undertaken by RA Power Solutions for the last forty-five years. The company has technicians who are trained to undertake onsite crankshaft repairs strictly as per the manufacturer’s specifications stipulated in the manual.
All technicians have valid CDCs and can travel on short notice anywhere in the world to board the vessel. The onsite crankshaft repair and onsite crankshaft grinding equipment used by RA Power Solutions has a main structure manufactured out of Titanium steel, which results in the absorption of Vibration while the onsite crankshaft grinding machine is in operation in high seas with turbulence. The quality after the reconditioning and repair of the crankshaft is of Great Importance and is maintained. The following checks are undertaken.
Quality of a Re-Machined Pin or Journal
The quality of a pin or journal after machining has to meet the following requirements:
- Geometrical tolerance by manufacturer specifications.
- A bluing check has to be carried out on the re-machining surface. Blueing Shells: Min. Width is equivalent to Journal or Crankpin dimensions, respectively. Min. Length is equivalent to 1/5 of the Journal or crank-pin circumference.
- Required contact area: Min 35% equally distributed over width and circumference.
- Free of hairline cracks: Journal or crank pin to be tested through the magnetic Particle crack detection method.
- Free of Martensite: The microstructure is to be tested for edged areas of martensite structure, using replicas or micro etching with 5% nitric acid in alcohol (Nital) applied to the pin after polishing.
- The maximum admissible hardness of remaining local hardsports: However, such local hardsports are not tolerated around the fillets and the bores for lubrication.
For more information about onsite crankshaft repair and grinding, crankshaft grinding, onsite crankpin grinding, etc. Please contact us at rajshahani@rapowersolutions.com or info@rapowersolutions.com, or call us at +91 9582647131 or +91 9810012383.
